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Latest Quasar Stories

Early Black Holes Grew Big Eating Cold, Fast Food
2011-12-13 04:19:10

Researchers at Carnegie Mellon University’s Bruce and Astrid McWilliams Center for Cosmology have discovered what caused the rapid growth of early supermassive black holes – a steady diet of cold, fast food.

Image 1 - Monster Galaxies Found To Harbor Record Massive Black Holes
2011-12-06 10:40:02

Astronomers have discovered the largest black holes to date -- two monstrous abyssal voids with masses equivalent to more than 10 billion suns.

Image 1 - Galaxies Are Ultimate Recyclers
2011-11-18 04:02:02

New observations by NASA's Hubble Space Telescope are expanding astronomers' understanding of the ways in which galaxies continuously recycle immense volumes of hydrogen gas and heavy elements.

Advanced Hubble Equipment Reveals Galaxies' Most Elusive Secrets
2011-11-17 14:30:01

New instrument shows the gaseous halos of galaxies are much larger and more massive than the distribution of stars within the galaxy.

Astronomers Find Clouds Of Primordial Gas From The Early Universe
2011-11-11 04:10:18

For the first time, astronomers have found pristine clouds of the primordial gas that formed in the first few minutes after the Big Bang.

Black Hole Imaged Gobbling Up Accretion Disc
2011-11-04 09:59:30

A team of scientists has used the NASA/ESA Hubble Space Telescope to observe a quasar accretion disc — a brightly glowing disc of matter that is slowly being sucked into its galaxy’s central black hole.

2011-10-11 09:28:03

Astrophysicists have found evidence of black holes destroying stars, a long-sought phenomenon that provides a new window into general relativity.

Laser Art Installation Featuring Hubble Observations Travels To The US
2011-09-23 08:08:04

A public art installation featuring Hubble observations of distant galaxies, quasars and stars is going to the USA.


Latest Quasar Reference Libraries

8_2c71772f2c3a31994d5208d4518632495
2004-10-19 04:45:44

Large-Scale Structure of the Cosmos -- Stars are organised into galaxies which in turn appear to form clusters and superclusters, separated by voids. Prior to 1989 it was commonly assumed that the superclusters were the largest structures in existence, and that they were distributed more-or-less uniformly throughout the universe in every direction. However, in 1989, Margaret Geller and John Huchra discovered the "Great Wall", a sheet of galaxies more than 500 million light years long...

6_8304cd2002012eb0093845e374a1b9612
2004-10-19 04:45:42

Supermassive Black Hole -- A Supermassive black hole is a black hole with a mass in the range of millions or billions solar masses. A supermassive black hole has some interesting properties differing from his low-mass cousins: -- The average density of a supermassive black hole can be very low, and actually can be lower than water's density. This happens because the black hole diameter increases linearly with mass, and consequently density drops much faster. -- Strong tidal...

6_c01dfaf162273609e19b80ea97407cf52
2004-10-19 04:45:42

Redshift -- Redshift is the phenomenon that the frequency of light when observed, under certain circumstances, can be lower than the frequency of light when it was emitted at the source. This usually occurs when the source moves away from the observer, as in the Doppler effect. More specifically, the term redshift is used for the observation that the spectrum of light emitted by distant galaxies is shifted to lower frequencies (towards the red end of the spectrum, hence the name) when...

6_c74ddf89e1e986e7de2e5e2451d6b60b2
2004-10-19 04:45:41

Microquasar -- Microquasars are smaller cousins of quasars. They are named after quasars, as they have some common characteristics: strong and variable radio emission often seen as radio jets, and an accretion disk surrounding a black hole. In quasars, the black hole is supermassive (millions of solar masses) as in microquasars, the black hole mass is a few solar masses. In microquasars, the accreted mass comes from a normal star and the accretion disk is very luminous in optical regions...

6_fec4ca0e97baf4ce0833c41b1e6be5e62
2004-10-19 04:45:41

Gravitational Lens -- A gravitational lens is formed when the light from a very distant, bright object (such as a quasar) is "bent" around a massive object (such as a massive galaxy) between the bright object and the viewer. The process is known as gravitational lensing, and was one of the predictions made by Einstein's general relativity. Description In a gravitational lens, the gravity from the massive object bends light as a lens might. As a result, the path of the light from a...

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Word of the Day
edulcoration
  • The act of sweetening by admixture of some saccharine substance.
The word 'edulcoration' comes from a Latin word meaning 'making sweet'.